Photo taken on Jan. 18, 2012 shows the D615 bullet train is pulled by a locomotive in Xuchang of central China's Henan Province. The traffic on China's most bustling railway linking Beijing with southern Guangzhou City has been blocked after a passenger train lost power in Zhengzhou, capital of central Henan province, Wednesday morning. The Zhengzhou Bureau of Railways said the D615, a bullet train, on its way from Beijing to Wuhan City lost power at about 7 a.m.. The bureau has sent technicians to help fix glitches. (Xinhua/Niu Shupei)